Alter New York NY — Alter is a 2025-founded company based in New York, New York. Zero-trust identity and access control for AI agent workflows with authentication and guardrails on every tool call.
What Alter builds
Zero-trust identity and access control for AI agent workflows with authentication and guardrails on every tool call.
Who uses it
Typical buyers: Engineering and security leaders at mid-market and enterprise companies running AI or SaaS evaluations in 2025–2026. Request a security questionnaire, reference customers in your vertical, and pilot scope before production rollout.
Funding snapshot
Reported funding: Y Combinator Summer 2025
Investors / programs: Y Combinator
Round sizes change quickly in the 2025–2026 NYC cohort — treat figures as point-in-time from press dated in our dossier, not live cap tables.
Leadership
Founder names and LinkedIn profiles are listed on the Y Combinator Summer 2025 profile for Alter. We do not invent biographies — verify current titles on the official site.
Why New York, NY
Headquartered in New York City, the company sits in the densest U.S. venture market outside Silicon Valley — where seed and Series A rounds in AI, fintech, and healthtech are tracked weekly by AlleyWatch and covered by national press. NYC HQ typically means access to Y Combinator alumni networks, enterprise pilot customers in Midtown and the Financial District, and hiring from Columbia, NYU, and Cornell Tech pipelines.
Common questions
- When was Alter founded?
- Public sources cite 2025 as the founding year, with headquarters in New York, New York. Confirm the legal entity via the NY Department of State business search before contracts.
- How is Alter funded?
- Y Combinator Summer 2025 Backers include Y Combinator.
- Is Alter a Y Combinator company?
- Yes — listed in the Summer 2025 batch with NYC operations. See the YC company profile for the latest one-line description and founder links.
Languages
Company materials reviewed in English. Contact the team via the website for other language support or accessibility needs at any listed office.
Contact
- Website: www.alter.ai
- Headquarters: New York, New York, United States
Last verified: 2026-06-21. Facts sourced from the official website, AlleyWatch/YC/press URLs in our dossier, and NY registry cross-checks. Funding, pricing, and product scope change — confirm directly before decisions.
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